2018-01-15T15:55:57Zonlinelibrary.wiley.comPOLE 1ROCSTriflic Acid as an Efficient Brønsted Acid Promoter for the Umpolung of N‐Ac Indoles in Hydroarylation Reactions161-172en10.1002/adsc.201701074http://onlinelibrary.wiley.com/doi/10.1002/adsc.201701074/abstract